Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Breathable Waterproof Finish of PET Fabrics via Microporous UV Coating of Polyurethane Diacrylate

폴리우레탄 디아크릴레이트의 미세다공성 UV코팅에 의한 PET 직물의 투습방수가공

  • Koo, Gwang-Hoe (Department of Nano-Bio Textile Engineering, Kumoh National Institute of Technology) ;
  • Jang, Jin-Ho (Department of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
  • 구광회 (금오공과대학교 나노바이오텍스타일공학과) ;
  • 장진호 (금오공과대학교 나노바이오텍스타일공학과)
  • Received : 2010.08.17
  • Accepted : 2010.09.14
  • Published : 2010.09.27
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Abstract

Breathable waterproof PET fabrics were prepared by the UV coating of UV-curable polyurethaneacrylate(PUA) formulation mixed with polyethyleneglycol(PEG) as a water soluble pore former. The dispersed PEG in the UV-cured coating was extracted by warm water, which can generate individual circular pores uniformly distributed all over the coating instead of pore channels. Accordingly the moisture permeability of the microporously coated fabrics increased substantially with increasing PEG addition without significant reduction of hydrostatic pressure. Also the silicone diacrylate addition in the formulation was beneficial in increasing the hydrostatic pressure. The UV-based microporous coating can be an alternative to conventional thermal curing of solventborne polyurethane coating owing to the enhanced environment friendliness and energy saving.

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References

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